Friendly Encounter The Executive Board of a Popular Online Dating Website, Called

Friendly Encounter
The Executive Board of a popular online dating website, called Friendly Encounter, wanted to know how to market the site by targeting the age groups most likely to be interested in its product. To find out, a random sample of 250 users was drawn from its database of participants who had been active during the previous month. The users were then categorized into age groups. The average frequency of access per week was recorded for each age group. The result was organized into the following table of data:
-Refer to the Friendly Encounter table. From this sample data, what may the Executive Board deduce about the approximate percentage of its dating site users being 40 years of age and over?